Your parabola should look like this image. The vertex is at (-1, 9), and you can use any of the x-intercepts (-4, 0) & (2, 0) or the y-intercept (0, 8) as a second point.
Answer:
It is 300 cubic inches!
Step-by-step explanation:
Im sorry I dont really know how to explain it but- am I correct? ;-;